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Last Post

gain of Flat different from gain of Z...Started by:danila, 07/06/2006 12:30PM
Hello everybody,

My flat images has gain value different
from gain of zero images. Is it bad?
Does IRAF ccd reduction tasks account
this difference automatically if I put
"gain= gain" in epar?

thanks for your attention,

Andrey D...

4183

By: danila

07/06/2006 12:30PM

creating NaN's in a fits imageStarted by:jkrick, 07/06/2006 12:50AM
This may be strange, but I would like to
make some of the pixels in some mosaic
images have the value "NaN". I have
tried imarith and imexpr, using either
log of a negative number or dividing
images by 0, but the tasks quit with
errors and won't write...

5541

By: fitz

07/06/2006 12:50AM

advice requested please: running IRAF...Started by:Guest, 06/30/2006 07:08PM
Hello! This somewhat of a strange
request, but I've been sending emails to
various astronomy-related websites
(observatories included) in order to get
some advice about laptops and Linux and
astronomy-related software (I haven't
been able to find any in...

3490

By: fitz

06/30/2006 07:08PM

Journaling in IRAF?Started by:baryonicminority, 06/29/2006 09:03PM
Hi all,

I was wondering if IRAF has a journaling
function that records sessions, similar
to the one that IDL has.

Any help or advice would be much
appreciated.

Thanks,

- a.s.

4513

By: itso

06/29/2006 09:03PM

plotting image spectrumStarted by:ross58, 06/24/2006 09:44AM
when I plot an image spectrum of 16834
lines it gives back:
error:
/usr/lib/iraf/iraf//noad/bin/x_onedspec.e:
memory has been corrupted

What does it mean? What can I do?

3570

By: fitz

06/24/2006 09:44AM

help ! (imcombine)Started by:dwg906, 06/22/2006 01:14PM
because of low S/N, I want to combine
some images, but i don't know how to do
it
:oops:

If you know about it, please help me!!
Thanks very much!

5803

By: dwg906

06/22/2006 01:14PM

x11iraf under RHEL WS4, 64-bitStarted by:EdAnderson, 06/20/2006 10:10PM
Hi

I'm having a rough time trying to
compile X11IRAF under Redhat WS 4
(64-bit).

Any comments, suggestions would be
greatly appreciated.

Thanks,

-- Ed

7729

By: EdAnderson

06/20/2006 10:10PM

Another problem with imalignStarted by:, 06/19/2006 07:59PM
Hi,

I know that there is lots of answers to
problems connecting to imalign, but I
couldn't find just similar to mine.

I have successfully used before imalign,
but this is new problem that I haven't
solved (with tens of other :).

About the problem. Im...

14331

By: moppi

06/19/2006 07:59PM

operating system suggestions neededStarted by:, 06/19/2006 07:44PM
I'm planning on getting a new laptop
soon and am eyeing up the new Macbook
Pro. I do need to run IRAF, however, and
have some misgivings if it's not
entirely recommended on mac intel. I
know there's been a successful port but
haven't heard/read from too...

3117

By: fitz

06/19/2006 07:44PM

Batch clStarted by:Guest, 06/16/2006 08:58PM
Hi people,
I'm running IRAF in a PC SUSE 9.x. The
problem is that we haven't a
proper STSDAS compiled for it at STScI,
so the people here compiled
STSDAS and TABLES in a lower SUSE
distribution in order to pass thru the
gnu lib gcc-3 incompatibilitie...

5640

By: jlkohlm

06/16/2006 08:58PM

group imagesStarted by:Guest, 06/15/2006 02:29PM
Hello!

I am Kushal Mehta, a summer student at
NRAO and am working on some HST
data. I am using iraf to reduce the data
and I have a couple of questions:

1. Is there a task or command that I can
use to make a single image
consisting of 4 groups from ...

3592

By: EdAnderson

06/15/2006 02:29PM

very long xgterm windowStarted by:pskoda, 06/14/2006 11:07PM
Hi all,
I wanted to work with a long part of
merged echelle spectra (having about
5000 points) not loosing the resolution
by calling

xgterm.bin -G 7000x400+10-10

It produces long graphics window (after
starting the plot commands)
hopefully 7000 poin...

3764

By: fitz

06/14/2006 11:07PM

plotting tables with sgraphStarted by:kkwitter, 06/09/2006 08:28PM
I am having trouble with the syntax for
plotting 2 column sof a 4-column table
with sgraph. I want to plot column 2 on
the x-axis and 3 on the y axis, but
several attempts with various suggested
and implied formats have been
unsuccessful.

Thanks!

6797

By: fitz

06/09/2006 08:28PM

flatcombine errorStarted by:lfrench, 06/07/2006 08:27PM
I'm having a problem trying to use
flatcombine. I'm using quadproc, an
adaptation of ccdproc for four chips
together. I was able to process the
biases---overscan and trim--and make a
master bias. Overscanning, trimming,
and bias-correcting the flats ...

5007

By: lfrench

06/07/2006 08:27PM

Syntax error in iraf cl.Started by:FSBoyden, 06/07/2006 10:54AM
Hallo

Just want to report a bug. I have
recently intsalled Iraf V2.12.2a and
when I run the cl I get a syntax error.

** Syntax error
**: if (!access (".hushiraf"))
^

I do not know if this is a known bug or
not. I am try...

4614

By: fitz

06/07/2006 10:54AM

ecl Problem in FC4Started by:FSBoyden, 06/07/2006 10:45AM
I don't know if I am doing something
wrong but I can't seem to be able to run
the install script. "I only started
using Linux at the start of this year."
I installed the 'sharutils' package and
downloaded the ecl_install_redhat.csh
script. But when I w...

21120

By: josephmeiring

06/07/2006 10:45AM

iraf2.13-beta2 on MacBook ProStarted by:caspin, 06/04/2006 01:49AM
I've just finished installing the Intel
Mac binaries on my new Macbook Pro and
it works great! It runs the Gemini
test benchmark script considerably
faster than the PPC binaries. Very nice
Mike, thanks for doing this! :lol:

The results are impr...

3749

By: caspin

06/04/2006 01:49AM

adding observatory to obsdb.datStarted by:Sunshine, 06/02/2006 04:00AM
How can I add an observatory to my iraf
account? I don't need it added to the
general one.

Thanks.

9524

By: Sunshine

06/02/2006 04:00AM

imcombineStarted by:dbrenner, 06/02/2006 02:40AM
I have the following code

procedure getmedian
string *filelist
begin
#make list of files
if (access(filename = "left.lis"))
delete(file = "left.lis")
ls "*L.fits", > "left.lis"
filelist = "left.lis"
#make median image
imcombine(input = filelist, ou...

4978

By: dbrenner

06/02/2006 02:40AM

[Fwd: MiMo and WCS]Started by:valdes, 06/01/2006 10:59PM
Hi Steve,

Yes I believe the MiMo WCS is now fixed
for users.

Probably the task that would be most
like what you describe is
mscred.mscfinder.msctpeak (i.e. task
msctpeak task in the mscfinder
subpackage of the mscred package).

Frank

Steve Howell w...

3533

By: valdes

06/01/2006 10:59PM

ecl install error with FC5Started by:dylan.semler, 05/30/2006 02:28AM
I'm not sure if this is a problem that
anyone else will have but when trying to
install the ecl on Fedora Core 5 I got
the following errors:
[code:1:c9f23c4d4c]tail: cannot open
`+455' for reading: No such file or
directory
uudecode: _ecl...

3946

By: fitz

05/30/2006 02:28AM

"merge amps" in mscred's cc...Started by:Edward Olszewski, 05/24/2006 04:43PM
I was reducing some MMT Megacam data.
I'd forgotten SAO's warning
that "there's a bug in merge amps in
ccproc that adds a blank column",
and i didn't use their "megamerge"
routine. So indeed I have an mef with
36 extensions of data, all of which are
102...

4030

By: fitz

05/24/2006 04:43PM

Data ReductionStarted by:Guest, 05/22/2006 09:05PM
I'm about to start reducing my data. Do
I need to make a copy of the files first
before I do anything to them or is step
one simply to combine and subtract the
bias frames??

Thanks!

3754

By: fitz

05/22/2006 09:05PM

Multiple image fits files part 2Started by:dbrenner, 05/22/2006 08:36PM
I made a fits file that contains
multiple images

imcopy(input = "moviedir$tmp.fits",
output =
"moviedir$"//object//".fits["//str(i)//",append]")

If I use display I can display one of
the images

display hip12345.fits[1], frame = 1.

What I can't do i...

12444

By: dbrenner

05/22/2006 08:36PM

Gemini South coordinates in obsdb.dat...Started by:bmiller, 05/19/2006 07:28PM
Hi,

We have discovered that the coordinates
of the Gemini South telescope in
noao$lib/obsdb.dat are off by a small
amount. The correct values are given
below.

Thanks,
Bryan

# Gemini-South
# submitted by Bryan Miller, 5/18/2006
# from the Gemini TCS...

4008

By: fitz

05/19/2006 07:28PM

multiple image fits filesStarted by:dbrenner, 05/17/2006 07:33PM
I want to put several images into a
single fits file. i.e. make a data cube.

so

for i = 1 to 10
imcopy filei to cube.fits?

What is the proper form for my
cube.fits? such that I end up with all
10 files in the same fits file and can
display them in d...

4377

By: fitz

05/17/2006 07:33PM

Slow center markingStarted by:, 05/06/2006 11:29AM
Hi all,

I am working on photometry of an Abell
cluster with some 500 galaxies in the
field. Galaxies have to be marked
manually. I am doing this via center
task, interactively. I've enabled the
the neccessary options to mark the
centers in ds9, and th...

5517

By:

05/06/2006 11:29AM

daophot/phot output formatStarted by:ping, 05/05/2006 11:04PM
Dear IRAF,

The task "PHOT" has output format %-6d
for ID. That means it can only process
maximum of 999999 stars. (5 years ago
it was %-5d, so it could only do 99999
starts). Now I have Mosaic image with 3
million stars. How do I change the
output...

5970

By: ping

05/05/2006 11:04PM

Possible copy bugStarted by:Jason Quinn, 04/30/2006 05:05AM
I may have found a bug in IRAF's
[i:d8167a55da]copy[/i:d8167a55da]
command. I've noticed that
[i:d8167a55da]copy[/i:d8167a55da]
corrupts some gzipped files. For
instance, try downloading and
[i:d8167a55da]copy[/i:d8167a55da]'ing
[b:d8167a55da]table.2.gz...

4575

By: Jason Quinn

04/30/2006 05:05AM

fits extentions and examples in generalStarted by:Nigel Douglas, 04/14/2006 07:11PM
Congrats on the slick web page, very
efficient way of building up a Q&A
dbase.

I have a problem with fitsutil.fxinsert
- basically it does not do what I want.
The "help" examples are rather unhelpful
as you don't know how the input and
output files...

3968

By: fitz

04/14/2006 07:11PM

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